GB1402289A - Control means interconnecting a plurality of variable displace ment hydraulic machines - Google Patents

Control means interconnecting a plurality of variable displace ment hydraulic machines

Info

Publication number
GB1402289A
GB1402289A GB5862072A GB5862072A GB1402289A GB 1402289 A GB1402289 A GB 1402289A GB 5862072 A GB5862072 A GB 5862072A GB 5862072 A GB5862072 A GB 5862072A GB 1402289 A GB1402289 A GB 1402289A
Authority
GB
United Kingdom
Prior art keywords
motors
pumps
slot
lever
pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5862072A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of GB1402289A publication Critical patent/GB1402289A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/427—Motor capacity control by mechanical control means, e.g. by levers or pedals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
    • B62D11/06—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source
    • B62D11/10—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears
    • B62D11/14—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source
    • B62D11/18—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source the additional power supply being supplied hydraulically
    • B62D11/183—Control systems therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/437—Pump capacity control by mechanical control means, e.g. by levers or pedals

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Control Of Fluid Gearings (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Motor Power Transmission Devices (AREA)

Abstract

1402289 Controlling pumps and motors CATERPILLAR TRACTOR CO 19 Dec 1972 [23 Dec 1971] 58620/72 Heading F1A [Also in Division F2] A control linkage for a pair of variable displacement pumps or motors 10, 12 of a hydrostatic transmission comprises a pair of levers 42 each of which is, at one end, adjustably connected to a pump or motor displacement actuating element 16 and at the other end is adjustably connected to a link 60 which inter-connects the levers 42. Each lever 42 is pivotally connected to an arm 20 of a bracket 24 carrying two adjusting screws 26, 28 between which is held an arm 22 fast with the pump or motor displacement adjusting mechanism 16. A pin 44 on the other end of the lever 42 engages a slot 46 in a bracket 36 which is pivoted at 38 on a fixed frame. The pin 44 is normally held against the end of the slot 46 by a spring pressed yoke 50. The end position of the slot is adjustable by a screw 48. The brackets 36 are additionally pivoted to the inter-connecting link 60. An hydraulic motor 40 pivots the brackets 36 about their pivot points 38 in unison for equal displacement changes in the pumps or motors. Selective operation of hydraulic motors 34 acts through the yokes 50 to move the pin 44 of the lever 42 along the slot 46 to effect selective displacement changes in the pumps or motors for steering purposes. The pistons 52 of the motors 33 are fast with the yokes 50 and are biased to the position shown by springs 54. The pumps or motors 10, 12 may be in separate hydrostatic transmission or may be motors supplied by a common pump.
GB5862072A 1971-12-23 1972-12-19 Control means interconnecting a plurality of variable displace ment hydraulic machines Expired GB1402289A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21131871A 1971-12-23 1971-12-23

Publications (1)

Publication Number Publication Date
GB1402289A true GB1402289A (en) 1975-08-06

Family

ID=22786423

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5862072A Expired GB1402289A (en) 1971-12-23 1972-12-19 Control means interconnecting a plurality of variable displace ment hydraulic machines

Country Status (8)

Country Link
US (1) US3772964A (en)
JP (1) JPS4869954A (en)
BE (1) BE793095A (en)
CA (1) CA985990A (en)
DE (1) DE2262625A1 (en)
FR (1) FR2164910B1 (en)
GB (1) GB1402289A (en)
IT (1) IT974222B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117060A (en) * 1982-03-18 1983-10-05 Donkin And Company Limited Hydraulically operated apparatus

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914938A (en) * 1974-08-20 1975-10-28 Eaton Corp Electrical hydrostatic transmission control system
DE2456473C3 (en) * 1974-11-29 1978-04-20 Eaton Gmbh, 5620 Velbert Control device for a hydrostatic drive
US3990320A (en) * 1974-12-09 1976-11-09 Caterpillar Tractor Co. Control linkage for hydrostatic transmissions
US4064766A (en) * 1977-06-15 1977-12-27 Caterpillar Tractor Co. Modular control linkage assembly for a hydrostatic transmission
US7051641B2 (en) * 2004-07-22 2006-05-30 Clark Equipment Company Adjustment for steering levers for hydrostatic drive
US7210500B2 (en) * 2004-10-28 2007-05-01 Hr Textron, Inc. Methods and apparatus for mechanically adjusting a null offset in a torque motor of a servovalve

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US971764A (en) * 1908-11-16 1910-10-04 Theodore E Lutz Adjustable crank attachment.
US1751172A (en) * 1927-08-06 1930-03-18 George D Reinhardt Valve and valve-operating mechanism
US2274029A (en) * 1938-11-07 1942-02-24 Archer Roy Flow responsive device
US3158173A (en) * 1961-09-19 1964-11-24 Chicago Specialty Mfg Co Type of ball cock
US3307583A (en) * 1964-05-01 1967-03-07 Atlantic Res Corp Valve actuating means
US3477225A (en) * 1967-06-14 1969-11-11 Caterpillar Tractor Co Hydrostatic transmission control system
US3575378A (en) * 1969-06-18 1971-04-20 Pratt Co Henry Valve operator mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117060A (en) * 1982-03-18 1983-10-05 Donkin And Company Limited Hydraulically operated apparatus

Also Published As

Publication number Publication date
US3772964A (en) 1973-11-20
CA985990A (en) 1976-03-23
DE2262625A1 (en) 1973-06-28
FR2164910A1 (en) 1973-08-03
IT974222B (en) 1974-06-20
JPS4869954A (en) 1973-09-22
BE793095A (en) 1973-06-20
FR2164910B1 (en) 1974-01-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee